WM024 DROP BALL TESTER 5/8″

No mechanical parts and so simple it works with the minimum of effort every time. The drop distance is precisely the same each time and the path of the ball can be viewed through the clear acrylic tubing. Available in both 5/8″, 1″ (model WM124 $ 500.00), or dual style (model WM224 $ 600.00) for both ophthalmic and safety lens.